Merge pull request NCAR#1157 from scrasmussen/bugfix/arm_sgp_summer_1997_A-SCM_WoFS_v0-CI

bugfix: NaNs in module_mp_nssl_2mom.F90

Author: grantfirl

physics/MP/NSSL/module_mp_nssl_2mom.F90

@@ -10052,6 +10052,8 @@ SUBROUTINE NUCOND    &
 
           IF ( c1 > 0. ) THEN
             ssfilt(ix,jy,kz) = 100.*(an(ix,jy,kz,lv)/c1 - 1.0)  ! from "new" values
+          ELSE
+            ssfilt(ix,jy,kz) = -100.
           ENDIF
 
         ENDDO